/* =====================================================
   SenseiPanel · Landing page v2
   Colores basados en el logo: navy blue + red
   ===================================================== */

:root {
    --navy: #1a2c50;
    --navy-2: #0f1d36;
    --navy-light: #2d4275;
    --red: #c01818;
    --red-2: #a01313;
    --accent: #dc2626;
    --bg: #ffffff;
    --bg-alt: #f8fafc;
    --bg-soft: #f1f5f9;
    --text: #0f172a;
    --muted: #64748b;
    --border: #e2e8f0;
    --good: #16a34a;
    --warn: #f59e0b;
    --shadow-sm: 0 1px 3px rgba(15,23,42,0.06);
    --shadow:    0 4px 12px rgba(15,23,42,0.08);
    --shadow-lg: 0 20px 60px rgba(15,23,42,0.12);
    --radius: 12px;
    --radius-lg: 20px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
    margin: 0;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    color: var(--text);
    background: var(--bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 1180px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

h1, h2, h3, h4 {
    line-height: 1.2;
    margin: 0 0 0.5rem;
    font-weight: 800;
    letter-spacing: -0.02em;
}
h1 { font-size: clamp(2.2rem, 4.5vw, 3.4rem); }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.6rem); }
h3 { font-size: 1.2rem; }
p  { margin: 0 0 1rem; color: var(--muted); }

a { color: var(--red); text-decoration: none; transition: color 0.15s; }
a:hover { color: var(--red-2); }

.accent { color: var(--red); }
.eyebrow {
    display: inline-block;
    color: var(--red);
    font-weight: 600;
    font-size: 0.85rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    background: #fef2f2;
    padding: 0.3rem 0.8rem;
    border-radius: 999px;
    margin-bottom: 1rem;
}

.section-head {
    text-align: center;
    max-width: 720px;
    margin: 0 auto 3rem;
}
.section-sub {
    font-size: 1.1rem;
    color: var(--muted);
    margin-top: 0.5rem;
}

/* ========== BOTONES ========== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.4rem;
    border: 0;
    border-radius: var(--radius);
    font-family: inherit;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: transform 0.08s, box-shadow 0.15s, background 0.15s;
    text-decoration: none;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary {
    background: var(--red);
    color: #fff;
    box-shadow: 0 4px 12px rgba(192,24,24,0.3);
}
.btn-primary:hover {
    background: var(--red-2);
    color: #fff;
    box-shadow: 0 6px 16px rgba(192,24,24,0.4);
}
.btn-ghost {
    background: transparent;
    color: var(--navy);
    border: 2px solid var(--border);
}
.btn-ghost:hover { border-color: var(--navy); background: #fff; color: var(--navy); }
.btn-outline {
    background: transparent;
    color: var(--navy);
    border: 2px solid var(--navy);
}
.btn-outline:hover { background: var(--navy); color: #fff; }
.btn-whatsapp {
    background: #25D366;
    color: #fff;
    box-shadow: 0 4px 12px rgba(37,211,102,0.3);
}
.btn-whatsapp:hover { background: #1ea952; color: #fff; }
.btn-lg  { padding: 1rem 1.6rem; font-size: 1.05rem; }
.btn-block { width: 100%; }

/* ========== HEADER ========== */
.site-header {
    position: sticky;
    top: 0;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    z-index: 100;
}
.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.8rem 1.5rem;
    gap: 1rem;
}
.brand-logo { height: 48px; width: auto; display: block; }
.nav-links { display: flex; gap: 1.8rem; align-items: center; }
.nav-links a {
    color: var(--text);
    font-weight: 500;
    font-size: 0.95rem;
}
.nav-links a:hover { color: var(--red); }
.nav-cta { padding: 0.55rem 1.1rem; font-size: 0.9rem; }
.nav-toggle {
    display: none;
    background: none;
    border: 0;
    width: 40px;
    height: 40px;
    cursor: pointer;
    padding: 0;
}
.nav-toggle span {
    display: block;
    width: 24px; height: 2px;
    background: var(--text);
    margin: 5px auto;
    transition: 0.2s;
}

/* ========== HERO ========== */
.hero {
    padding: 4rem 0 5rem;
    background:
        radial-gradient(circle at 20% 0%, rgba(192,24,24,0.06), transparent 50%),
        radial-gradient(circle at 80% 100%, rgba(26,44,80,0.06), transparent 50%),
        linear-gradient(180deg, #fff 0%, #fafbfc 100%);
    overflow: hidden;
}
.hero-grid {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 3rem;
    align-items: center;
}
.hero-title {
    margin-bottom: 1rem;
    color: var(--navy);
}
.hero-subtitle {
    font-size: 1.15rem;
    color: var(--muted);
    margin-bottom: 1.5rem;
    max-width: 540px;
}
.hero-price-tag {
    display: inline-block;
    background: linear-gradient(135deg, var(--navy) 0%, var(--red) 100%);
    color: #fff;
    padding: 0.6rem 1.2rem;
    border-radius: 999px;
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 4px 12px rgba(15,23,42,0.15);
}
.hero-price-tag strong { font-size: 1.4rem; font-weight: 800; }
.hero-cta {
    display: flex;
    gap: 0.8rem;
    flex-wrap: wrap;
    margin-bottom: 1.5rem;
}
.hero-trust {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
    color: var(--good);
    font-weight: 500;
    font-size: 0.9rem;
}

/* Visual mock */
.hero-visual {
    position: relative;
    height: 460px;
}
.hero-card {
    position: absolute;
    background: #fff;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 1.4rem;
}
.hero-card-main {
    width: 340px;
    top: 0;
    right: 30px;
    animation: float 6s ease-in-out infinite;
}
.hero-card-nfc {
    width: 150px;
    bottom: 20px;
    left: 0;
    text-align: center;
    background: var(--navy);
    color: #fff;
    animation: float 6s ease-in-out infinite;
    animation-delay: -3s;
}
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50%      { transform: translateY(-10px); }
}
.mock-dashboard { display: flex; flex-direction: column; gap: 0.6rem; }
.mock-row {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.5rem 0.7rem;
    background: #f8fafc;
    border-radius: 8px;
    font-size: 0.85rem;
}
.mock-row.mock-alert {
    background: #fef3c7;
    border-left: 3px solid var(--warn);
}
.mock-row.mock-ready {
    background: #dcfce7;
    border-left: 3px solid var(--good);
}
.mock-dot {
    width: 10px; height: 10px;
    border-radius: 50%;
    flex-shrink: 0;
}
.mock-row .mock-time {
    margin-left: auto;
    color: var(--muted);
    font-variant-numeric: tabular-nums;
    font-size: 0.8rem;
}
.mock-summary {
    margin-top: 0.6rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border);
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 0.6rem;
}
.mock-stat { text-align: center; }
.mock-stat-num {
    font-size: 1.3rem;
    font-weight: 800;
    color: var(--navy);
    line-height: 1.1;
}
.mock-stat-warn { color: var(--warn); }
.mock-stat-label {
    font-size: 0.7rem;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

/* NFC mock en hero */
.nfc-mock {
    width: 80px; height: 80px;
    background: var(--red);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 0.6rem;
    position: relative;
}
.nfc-icon { font-size: 2rem; position: relative; z-index: 2; }
.nfc-waves {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: none;
}
.nfc-waves span {
    position: absolute;
    width: 100%; height: 100%;
    border: 2px solid var(--red);
    border-radius: 50%;
    opacity: 0;
    animation: nfc-pulse 2.4s infinite;
}
.nfc-waves span:nth-child(2) { animation-delay: 0.8s; }
.nfc-waves span:nth-child(3) { animation-delay: 1.6s; }
@keyframes nfc-pulse {
    0%   { transform: scale(0.6); opacity: 0.8; }
    100% { transform: scale(2);   opacity: 0;   }
}
.nfc-label { font-size: 0.8rem; font-weight: 600; }

/* ========== SOCIAL PROOF ========== */
.proof-bar {
    background: var(--navy);
    color: #fff;
    padding: 2.5rem 0;
}
.proof-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    text-align: center;
}
.proof-num {
    font-size: 2.2rem;
    font-weight: 800;
    color: #fff;
    line-height: 1.1;
}
.proof-label {
    color: rgba(255,255,255,0.7);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-top: 0.3rem;
}

/* ========== FEATURES ========== */
.features { padding: 6rem 0; background: var(--bg); }
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}
.feature-card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 1.8rem;
    transition: transform 0.15s, box-shadow 0.15s, border-color 0.15s;
}
.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow);
    border-color: transparent;
}
.feature-icon {
    width: 56px; height: 56px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.2rem;
}
.feature-icon svg { width: 28px; height: 28px; }
.feature-card h3 { margin-bottom: 0.5rem; color: var(--navy); }
.feature-card p { margin: 0; font-size: 0.95rem; }
.feature-card strong { color: var(--red); }

/* ========== HOW ========== */
.how { padding: 6rem 0; background: var(--bg-alt); }
.steps {
    display: flex;
    align-items: stretch;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 2.5rem;
}
.step {
    background: #fff;
    padding: 2rem;
    border-radius: var(--radius-lg);
    flex: 1 1 250px;
    max-width: 320px;
    box-shadow: var(--shadow);
}
.step-num {
    width: 48px; height: 48px;
    border-radius: 50%;
    background: var(--navy);
    color: #fff;
    font-weight: 800;
    font-size: 1.4rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
}
.step h3 { color: var(--navy); margin-bottom: 0.4rem; }
.step p { margin: 0; }
.step-arrow {
    display: flex;
    align-items: center;
    color: var(--red);
    font-size: 2rem;
    font-weight: bold;
}
.how-cta { text-align: center; }

/* ========== ANTES VS DESPUÉS ========== */
.demo { padding: 6rem 0; background: var(--bg); }
.demo-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}
.demo-col {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 2rem;
    border: 2px solid var(--border);
}
.demo-before { border-color: #fecaca; background: #fff5f5; }
.demo-after  { border-color: #bbf7d0; background: #f0fdf4; }
.demo-col h3 { color: var(--navy); margin-bottom: 1rem; font-size: 1.3rem; }
.demo-col ul { margin: 0; padding-left: 0; list-style: none; }
.demo-col li {
    padding: 0.6rem 0;
    border-bottom: 1px solid rgba(0,0,0,0.06);
    color: var(--text);
    font-size: 0.95rem;
}
.demo-col li:last-child { border-bottom: 0; }

/* ========== BASE NFC 3D ========== */
.nfc-section {
    padding: 6rem 0;
    background: linear-gradient(135deg, var(--bg-alt) 0%, #e0e7ff 100%);
}
.nfc-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 3rem;
    align-items: center;
}
.nfc-visual {
    display: flex;
    align-items: center;
    justify-content: center;
}
.nfc-product {
    position: relative;
    width: 280px;
    height: 280px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.nfc-product-base {
    width: 200px;
    height: 200px;
    background: linear-gradient(135deg, var(--navy) 0%, var(--navy-2) 100%);
    border-radius: 30px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    box-shadow:
        0 30px 60px rgba(15,23,42,0.4),
        inset 0 -20px 30px rgba(0,0,0,0.2);
    transform: rotate(-8deg);
    animation: float 6s ease-in-out infinite;
    position: relative;
    z-index: 2;
}
.nfc-product-logo {
    color: #fff;
    font-size: 1.4rem;
    font-weight: 800;
    text-align: center;
    padding: 0 1rem;
    opacity: 0.9;
}
.nfc-product-tag {
    margin-top: 1rem;
    color: rgba(255,255,255,0.7);
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    background: rgba(255,255,255,0.1);
    padding: 0.3rem 0.8rem;
    border-radius: 999px;
}
.nfc-product-shadow {
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 180px;
    height: 30px;
    background: radial-gradient(ellipse, rgba(0,0,0,0.3), transparent 70%);
    z-index: 1;
}
.nfc-product-waves {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: none;
    z-index: 3;
}
.nfc-product-waves span {
    position: absolute;
    width: 200px; height: 200px;
    border: 2px solid var(--red);
    border-radius: 30px;
    opacity: 0;
    animation: nfc-pulse-square 3s infinite;
    transform: rotate(-8deg);
}
.nfc-product-waves span:nth-child(2) { animation-delay: 1s; }
.nfc-product-waves span:nth-child(3) { animation-delay: 2s; }
@keyframes nfc-pulse-square {
    0%   { transform: rotate(-8deg) scale(1);    opacity: 0.6; }
    100% { transform: rotate(-8deg) scale(1.6);  opacity: 0;   }
}
.nfc-text { padding-left: 1rem; }
.nfc-features {
    list-style: none;
    padding: 0;
    margin: 1.5rem 0;
}
.nfc-features li {
    padding: 0.5rem 0;
    color: var(--text);
    font-size: 0.95rem;
    border-bottom: 1px solid var(--border);
}
.nfc-features li:last-child { border-bottom: 0; }
.nfc-features strong { color: var(--navy); }
.nfc-price {
    background: #fff;
    padding: 1.2rem;
    border-radius: var(--radius);
    margin-bottom: 1rem;
    border: 2px dashed var(--red);
}
.nfc-price-main {
    font-size: 1.4rem;
    color: var(--navy);
}
.nfc-price-main strong { font-size: 2rem; color: var(--red); margin-right: 0.3rem; }
.nfc-price-main span { color: var(--muted); font-size: 0.95rem; }
.nfc-price small {
    color: var(--good);
    font-weight: 500;
}

/* ========== PRICING (single plan) ========== */
.pricing { padding: 6rem 0; background: var(--bg); }
.price-card-single {
    max-width: 900px;
    margin: 0 auto;
    background: linear-gradient(135deg, #fff 0%, #fff8f8 100%);
    border-radius: var(--radius-lg);
    border: 2px solid var(--red);
    box-shadow: 0 20px 60px rgba(192,24,24,0.15);
    padding: 3rem 2.5rem;
    position: relative;
}
.price-card-single-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 2rem;
    padding-bottom: 2rem;
    border-bottom: 2px solid var(--bg-soft);
    margin-bottom: 2rem;
    flex-wrap: wrap;
}
.price-card-single-header h3 {
    font-size: 2rem;
    color: var(--navy);
    margin-bottom: 0.3rem;
}
.price-card-single-header p { color: var(--muted); margin: 0; }
.price-card-single-price {
    text-align: right;
}
.price-big {
    font-size: 4rem;
    font-weight: 800;
    color: var(--red);
    line-height: 1;
}
.price-period {
    color: var(--muted);
    font-size: 1.2rem;
    margin-left: 0.3rem;
}
.price-iva {
    display: block;
    font-size: 0.85rem;
    color: var(--muted);
    font-weight: 500;
    margin-top: 0.3rem;
}
.price-features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-bottom: 2rem;
}
.price-features-grid ul {
    list-style: none;
    padding: 0;
    margin: 0;
}
.price-features-grid li {
    padding: 0.4rem 0;
    color: var(--text);
    font-size: 0.95rem;
}
.price-extra {
    background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
    color: #78350f;
    padding: 1.2rem;
    border-radius: var(--radius);
    text-align: center;
    margin-bottom: 1.5rem;
    font-size: 1rem;
}
.price-extra strong { color: #92400e; }
.price-cta { text-align: center; }
.price-cta .btn { max-width: 400px; margin: 0 auto; }
.price-fineprint {
    font-size: 0.85rem;
    color: var(--muted);
    margin: 0.8rem 0 0;
}

/* ========== ROADMAP ========== */
.roadmap { padding: 6rem 0; background: var(--bg-alt); }
.roadmap-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}
.roadmap-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 2rem;
    position: relative;
}
.roadmap-card.roadmap-soon {
    border: 2px solid var(--red);
    background: linear-gradient(135deg, #fff 0%, #fff8f8 100%);
}
.roadmap-badge {
    display: inline-block;
    background: var(--bg-soft);
    color: var(--muted);
    padding: 0.3rem 0.8rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-bottom: 1rem;
}
.roadmap-badge-done {
    background: #dcfce7;
    color: #166534;
}
.roadmap-soon .roadmap-badge {
    background: var(--red);
    color: #fff;
}
.roadmap-card h3 { color: var(--navy); margin-bottom: 0.5rem; }
.roadmap-card p { margin: 0; }

/* ========== TESTIMONIALS ========== */
.testimonials { padding: 6rem 0; background: var(--bg); }
.testimonial-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}
.testimonial {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 2rem;
    position: relative;
}
.testimonial::before {
    content: '"';
    position: absolute;
    top: 0; left: 1.4rem;
    font-size: 4rem;
    color: var(--red);
    opacity: 0.2;
    line-height: 1;
    font-family: Georgia, serif;
}
.testimonial p {
    margin: 0 0 1.2rem;
    font-style: italic;
    color: var(--text);
}
.testimonial-name { font-weight: 700; color: var(--navy); }
.testimonial-role { color: var(--muted); font-size: 0.85rem; }

/* ========== FAQ ========== */
.faq { padding: 6rem 0; background: var(--bg-alt); }
.faq-list { max-width: 760px; margin: 0 auto; }
.faq-item {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.2rem 1.5rem;
    margin-bottom: 0.8rem;
    transition: border-color 0.15s;
}
.faq-item:hover { border-color: var(--red); }
.faq-item summary {
    cursor: pointer;
    font-weight: 600;
    color: var(--navy);
    list-style: none;
    position: relative;
    padding-right: 2rem;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
    content: '+';
    position: absolute;
    right: 0; top: 50%;
    transform: translateY(-50%);
    color: var(--red);
    font-size: 1.5rem;
    font-weight: bold;
    line-height: 1;
    transition: transform 0.2s;
}
.faq-item[open] summary::after { content: '−'; }
.faq-item p { margin: 0.8rem 0 0; color: var(--text); }

/* ========== FINAL CTA ========== */
.cta-final {
    padding: 6rem 0;
    background: linear-gradient(135deg, var(--navy) 0%, var(--navy-2) 100%);
    color: #fff;
}
.cta-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}
.cta-text h2 { color: #fff; font-size: 2.4rem; margin-bottom: 1rem; }
.cta-text > p { color: rgba(255,255,255,0.85); font-size: 1.15rem; margin-bottom: 1.5rem; }
.cta-bullets { list-style: none; padding: 0; margin: 0; }
.cta-bullets li {
    padding: 0.5rem 0;
    color: rgba(255,255,255,0.95);
    font-weight: 500;
}
.cta-form-card {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 2rem;
    color: var(--text);
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}
.cta-form-card h3 { margin-bottom: 1rem; color: var(--navy); }
.cta-divider {
    text-align: center;
    margin: 1rem 0;
    position: relative;
    color: var(--muted);
    font-size: 0.85rem;
}
.cta-divider::before {
    content: '';
    position: absolute;
    top: 50%; left: 0; right: 0;
    height: 1px;
    background: var(--border);
    z-index: -1;
}
.cta-divider span { background: #fff; padding: 0 0.8rem; }
.contact-form label {
    display: block;
    margin-bottom: 0.8rem;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text);
}
.contact-form input,
.contact-form textarea,
.contact-form select {
    display: block;
    width: 100%;
    margin-top: 0.3rem;
    padding: 0.6rem 0.8rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    font: inherit;
    font-size: 0.95rem;
}
.contact-form input:focus,
.contact-form textarea:focus,
.contact-form select:focus {
    outline: none;
    border-color: var(--red);
    box-shadow: 0 0 0 3px rgba(192,24,24,0.15);
}
.cta-foot {
    text-align: center;
    color: var(--muted);
    font-size: 0.85rem;
    margin: 1rem 0 0;
}

/* ========== FOOTER ========== */
.site-footer {
    background: #0a1428;
    color: #cbd5e1;
    padding: 3rem 0 1.5rem;
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}
.footer-logo { height: 40px; margin-bottom: 0.6rem; filter: brightness(0) invert(1); }
.site-footer p { color: rgba(255,255,255,0.7); font-size: 0.9rem; }
.site-footer h4 {
    color: #fff;
    font-size: 0.95rem;
    margin-bottom: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
.site-footer a {
    display: block;
    padding: 0.3rem 0;
    color: rgba(255,255,255,0.7);
    font-size: 0.9rem;
}
.site-footer a:hover { color: #fff; }
.footer-bottom {
    padding-top: 1.5rem;
    border-top: 1px solid rgba(255,255,255,0.1);
    display: flex;
    justify-content: space-between;
    color: rgba(255,255,255,0.5);
    font-size: 0.85rem;
    flex-wrap: wrap;
    gap: 0.5rem;
}

/* ========== RESPONSIVE ========== */
@media (max-width: 900px) {
    .hero-grid { grid-template-columns: 1fr; gap: 2rem; }
    .hero-visual { height: 380px; margin-top: 1rem; }
    .features-grid { grid-template-columns: repeat(2, 1fr); }
    .demo-grid { grid-template-columns: 1fr; }
    .nfc-grid { grid-template-columns: 1fr; text-align: center; }
    .nfc-visual { margin-bottom: 2rem; }
    .price-card-single-header { flex-direction: column; text-align: center; }
    .price-card-single-price { text-align: center; }
    .price-features-grid { grid-template-columns: 1fr; gap: 0; }
    .roadmap-grid { grid-template-columns: 1fr; }
    .testimonial-grid { grid-template-columns: 1fr; }
    .cta-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .proof-grid { grid-template-columns: repeat(2, 1fr); }
    .step-arrow { display: none; }
}
@media (max-width: 640px) {
    .nav-links { display: none; }
    .nav-links.open {
        display: flex;
        position: absolute;
        top: 100%; left: 0; right: 0;
        background: #fff;
        flex-direction: column;
        padding: 1rem 1.5rem;
        gap: 1rem;
        border-bottom: 1px solid var(--border);
        box-shadow: var(--shadow);
    }
    .nav-toggle { display: block; }
    .nav-cta { display: none; }
    .features-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .proof-grid { grid-template-columns: repeat(2, 1fr); gap: 1rem; }
    .proof-num { font-size: 1.8rem; }
    .hero-cta { flex-direction: column; align-items: stretch; }
    .hero-cta .btn { justify-content: center; }
    .hero-card-main { right: 10px; }
    .footer-bottom { flex-direction: column; gap: 0.5rem; text-align: center; }
    .price-big { font-size: 3rem; }
}